Ride that edge slut but don't you dare cum! After a few moments, let the edge subside.
After it does, lay back with your legs spread wide and jerk your cock again as fast as you can. As you do, use your other hand to slowly finger your ass, but just use the tip. Tease that ass while stroking yourself to an edge.
When you get to an edge, get your hand off of your cock but leave the tip of your finger in your ass. Keep your legs spread as wide as you can and lay there for a minute with a finger in your ass.
This is a pretty humiliating position to be in. I know that I would be embarrassed to lay on my back with a finger in my ass and being dressed in ladies' lingerie!